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Finding the Fourth Proportional to 91,072.59, 125,714.80 and 68,477.20

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Solution

The fourth proportional to 91,072.59, 125,714.80 and 68,477.20 is: 94,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,072.59 : 125,714.80 = 68,477.20 : x
  2. Step 2: Convert to fraction form
    91,072.59/125,714.80 = 68,477.20/x
  3. Step 3: Cross multiply
    91,072.59x = 125,714.80 × 68,477.20
  4. Step 4: Simplify right side
    91,072.59x = 8,608,597,017.08
  5. Step 5: Solve for x
    x = 8,608,597,017.08/91,072.59
  6. Step 6: Final answer
    x = 94,524.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.